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7d6cd13ccb
The only meaningful difference between choose_pix_fmts and the default code was the inclusion of an extra branch for `keep_pix_fmt` being true. However, in this case, we either: 1. Force the specific `ofp->format` that we inherited from ofilter_bind_ost, or if no format was set: 2. Print an empty format list Both of these goals can be accomplished by simply moving the decision logic to ofilter_bind_ost, to avoid setting any format list when keep_pix_fmt is enabled. This is arguably cleaner as it moves format selection logic to a single function. In the case of branch 1, nothing else needs to be done as we already force the format provided in ofp->format, if any is set. Add an assertion to verify this assumption just in case. (Side note: The "choose_*" family of functions are arguably misnomers, as they should really be called "print_*" - their current behavior is to print the relevant format lists to the `vf/af_format` filter arguments) Signed-off-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: Niklas Haas <git@haasn.dev>
FFmpeg README
FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
Libraries
libavcodecprovides implementation of a wider range of codecs.libavformatimplements streaming protocols, container formats and basic I/O access.libavutilincludes hashers, decompressors and miscellaneous utility functions.libavfilterprovides means to alter decoded audio and video through a directed graph of connected filters.libavdeviceprovides an abstraction to access capture and playback devices.libswresampleimplements audio mixing and resampling routines.libswscaleimplements color conversion and scaling routines.
Tools
- ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
- ffplay is a minimalistic multimedia player.
- ffprobe is a simple analysis tool to inspect multimedia content.
- Additional small tools such as
aviocat,ismindexandqt-faststart.
Documentation
The offline documentation is available in the doc/ directory.
The online documentation is available in the main website and in the wiki.
Examples
Coding examples are available in the doc/examples directory.
License
FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.
Contributing
Patches should be submitted to the ffmpeg-devel mailing list using
git format-patch or git send-email. Github pull requests should be
avoided because they are not part of our review process and will be ignored.